Past measurement result　by Seawater Radiation Monitor near Fukushima Daiichi Nuclear Power Station

○Information

○Measurement value list ： 2026/02/01(CSV Download)

Radioactivity Concentration Unit:Bq/L

※ When being smaller then detection limit value, the numerical value is indicated with ND

TimeCs137Cs134Totalβ
00:00NDND21
00:10NDND21
00:20NDND21
00:30NDND15
00:40NDND16
00:50NDND15
01:00NDND15
01:10NDND15
01:20NDND16
01:30NDND21
01:40NDND20
01:50NDND20
02:00NDND22
02:10NDND21
02:20NDND22
02:30NDND18
02:40NDND19
02:50NDND17
03:00NDND20
03:10NDND20
03:20NDND18
03:30NDND21
03:40NDND21
03:50NDND22
04:00NDND19
04:10NDND20
04:20NDND23
04:30NDND21
04:40NDND19
04:50NDND18
05:00NDND18
05:10NDND16
05:20NDND13
05:30NDND15
05:40NDND19
05:50NDND19
06:00NDND20
06:10NDND22
06:20NDND20
06:30NDND19
06:40NDND17
06:50NDND16
07:00NDND18
07:10NDND16
07:20NDND16
07:30NDND15
07:40NDND15
07:50NDND16
08:00NDND13
08:10NDND14
08:20NDND16
08:30NDND17
08:40NDND16
08:50NDND16
09:00NDND18
09:10NDND19
09:20NDND17
09:30NDND19
09:40NDND22
09:50NDND23
10:00NDND19
10:10NDND16
10:20NDND17
10:30NDND16
10:40NDND14
10:50NDND15
11:00NDND18
11:10NDND21
11:20NDND21
11:30NDND21
11:40NDND21
11:50NDND19
12:00NDND21
12:10NDND20
12:20NDND23
12:30NDND24
12:40NDND26
12:50NDND27
13:00NDND26
13:10NDND24
13:20NDND23
13:30NDND23
13:40NDND22
13:50NDND23
14:00NDND24
14:10NDND25
14:20NDND22
14:30NDND20
14:40NDND18
14:50NDND15
15:00NDND14
15:10NDND16
15:20NDND19
15:30NDND20
15:40NDND20
15:50NDND22
16:00NDND22
16:10NDND21
16:20NDND23
16:30NDND21
16:40NDND23
16:50NDND23
17:00NDND23
17:10NDND23
17:20NDND21
17:30NDND20
17:40NDND19
17:50NDND20
18:00NDND21
18:10NDND21
18:20NDND19
18:30NDND20
18:40NDND19
18:50NDND20
19:00NDND21
19:10NDND20
19:20NDND20
19:30NDND20
19:40NDND19
19:50NDND20
20:00NDND17
20:10NDND16
20:20NDND17
20:30NDND18
20:40NDND18
20:50NDND17
21:00NDND18
21:10NDND20
21:20NDND20
21:30NDND22
21:40NDND22
21:50NDND22
22:00NDND21
22:10NDND21
22:20NDND21
22:30NDND20
22:40NDND19
22:50NDND21
23:00NDND21
23:10NDND22
23:20NDND23
23:30NDND21
23:40NDND22
23:50NDND23